Seismic Performance Analysis of SFCB Round End Pier Based on OpenSEES

Abstract

Steel fiber composite bar (SFCB), which is a new type of reinforcement to improve the seismic performance of bridge pier, based on the material level to improve the post-stiffness of pier. For further study on the effect of material parameters on the seismic performance, the round end pier hysteretic behavior is simulated using OpenSEES software which have strong nonlinear computation ability. The influence of axial compression ratio, the inner core diameter of steel bar, outer fiber thickness on the ductility , bearing capacity, stiffness, and energy dissipation capacity is analyze. The results show that with the increase in the diameter of the steel core can improve the bearing capacity of components, but the ductility decreases; the post-stiffness and outer fiber the thickness has a direct relationship, but its have no effect with ductility.